HPV? STD? Warts?

To preface this, i am in my mid twenties, and haven’t had sex in over a year.

I realized today that I had string-like projections on my vagina. Can anyone tell me what this is?

May be skin tags. If so they are harmless. There are kits (one is called Tagband) with liittle rubber bands applied with an applicator that stop the blood supply and cause them to drop away in about 3 weeks.